Click any service below to learn more about what’s involved, what warning signs to watch for, and what Nassau County homeowners should know about Long Island heating systems.
24/7 response for no-heat calls across Nassau County with fast diagnosis and fast repair.
A central repair hub for all heating system types when you are not sure what part needs attention.
We diagnose and repair boilers that will not fire, will not hold pressure, or are making unusual sounds.
Full boiler replacement with guidance on the right system for your home’s size, layout, and fuel source.
Specialized repair and maintenance for Navien condensing boilers and combi units.
Fixes for cold zones, noisy units, air-locked lines, and leaking baseboard heating components.
We diagnose and replace failed zone valves that leave parts of your home without heat.
Annual maintenance including cleaning, adjustment, testing, and balancing before heating season.
Ongoing maintenance plans designed to prevent breakdowns and keep systems running efficiently.
Complete oil-to-gas conversion service for cleaner operation, lower fuel costs, and improved efficiency.
In-floor radiant heating and snow-melt systems for quiet, even comfort and modern performance.
AJ Services has handled every one of these challenges across Nassau County homes for more than two decades. When you call us, you’re getting a team that has seen your situation before — and knows exactly how to handle it.
AJ Services provides heating repair, maintenance, and installation throughout Nassau County, including Bellmore, Wantagh, Merrick, Baldwin, Freeport, Oceanside, Lynbrook, Valley Stream, Garden City, Levittown, Massapequa, Rockville Centre, Long Beach, New Hyde Park, Hempstead, Uniondale, Plainview, Syosset, and surrounding areas.
Schedule your annual heating tune-up before the fall rush. September and October appointments fill quickly.
Call (516) 807-8700 to get on the schedule.
